Stellar Repair for Video software repairs corrupt videos and provides a ‘Preview’ option for the repaired files. The preview allows you to check if the software has successfully repaired the corrupt file before you save it on your system. However, you cannot download the preview files.
Once you are satisfied with the results in Preview, download the repaired videos by clicking ‘Save Repaired Files’.
Note: In the trial version, you can only preview up to 20% of the total video size.
You may like to read: Video Repair Guide